Patent Yard Sign in
Expired Canadian patentCanada

Rotary fluid-handling mechanism

CA 1261762 A · Owner: Alvaro, Marin A. · Inventors: Alvaro, Marin A.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A rotary mechanism for handling fluids in various ways e.g. as an air, compressor, pump for liquids hydraulic or air motor, internal combustion engine(diesel or otherwise) has a rotor internally cylindrically recessed from one end to receive, in close fitting, sealing relationship a stationary cylindrical support for a plurality, usually a pair, of rotary blades. The rotor is provided internally with a corresponding plurality of cavities helically oriented to receive portions of the respective blades which enter and pass through the respective cavities for compressing or propelling the particular fluid concerned depending upon the, particular nature of the mechanism. Inflow and outflow …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 1985
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261762 A
Classification (IPC)F01C3/02 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 12, 1985Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.